Steam heating boiler



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' W. HOPKINS Sr, C. FOGKLER.

STEAM HEATING BOILER.

Patented Feb.

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(NoMoae'l.) zsneets-fsneet'z. W. HOPKINS & C.. FOOKLER'. l STEAM HEATINGBUILER.

No. 272,692. Patented Feb.20, 1883.

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UNITED STATES `lZtTENT EEicE.

STEAM HEATING BOILER.

`SPECIEICA'IION forming part of Letters -Patrent No.l 272,692, datedFebruary 20, 1883.

Application filed November 3, 1882. (No model.) l

To all whom zt may concern:

' Be it known that we, WILLIAM HOPKINS and CHARLES FocKLEa, of Dubuque,in the county of Dubuque and State of Iowa, have invented a new andluseful Improvement in Steam Heating Boilers; and We do hereby declarethat the following is a full and exact description of the same,reference being had to the accompanying drawings, and to the letters otreference marked thereon.

The present invention relates to steam heating apparatus for buildings,and particularly that class in which the fuel magazine or reservoir islocated within an annular boiler.

The object is essentially to expose the largest possible amount ofsurface of tne boiler to the action of the heat and productsofcombustion, in order that but little ofthe heat passing over suchsurface may escape utilization.

It consists vin the novel construction and arrangement of the boilerwith relation to the ire-box, and the ei'ective construction andarrangement in such boiler and lire-box of the fuel magazine orreservoir, all'as will be more particularly hereinafter described, andpointed out in the claims.

For a better comprehension and more thorough nnderstandingof ourinvention, reference may be had to the accompanyingdrawings, in which-Figure 1 represents a vertical longitudinal section of the apparatus;Fig. 2, a top plan view of the same; Fig. 3, a vertical longitudinalsection of a modification of the apparatus; Figli, a similar View, inpart.. of a modification of the boiler-extension G ofFig. l; Vand Fig.5, a View, in part, of the adjustable fuel magazine or reservoir, andmeans by which it is secured in position when raised or lowered.

Like letters of reference indicate corresponding parts throughout thedrawings.

ln Figs. 1 and 2, A represents an annular base-plate, having formedwithin it an ash-pit of ordinary capacity, and supporting the grate B,which may be of any appropriate construction. Abovethis grate, and uponthe base-plate A', rests, and is secured thereon by any proper means,the boiler proper, U, preferably of annular form, and provided at itscenter and lower portion with the tire-box D, from which a passage, a,leads toa door, b, hinged to the outside of the boiler.

around this magazine or reservoir of sulcient 6o diameter to receive thetire-brick c c, which surrounds the lower portion of the magazine andprotects the same from destruction by heat. This magazine thus locatedwithin the boiler is adapted, when occasion requires, to

be raised and lowered by means of set-screws d d, which pass throughears e e of the boiler C, and engage each with a slot, f, cut in thesides ofthe magazine at a point diainetrically opposite each other andextending down to 7o the upper terminus of the fire-brick c c.

Between the walls of the boiler U and those of the tire-box D is formedthe water space or jacket F, having a connection at neck 7L with theboiler-extension G, which is supported by the fire-brick walls of thecombustion-chamber H. On the side opposite the door b ofthe boiler c,and opening into the tire-box, are lues i i, extending back andcommunicating withlhecombustion-chaniber. Theheatwhich is not utilizedby the water in the space or jacket F passes ott' with the gaseousproducts of combustion and smoke through the dues it' into thecombustion-chamber, and thence passes up around the drop-tubes I I,through 8c the tlues Ick into the smoke-jacket J, presently to bedescribed. t

The boiler-extension G,located above the combustion-chaniber, isconstructed with double wallsll, the space between the saine being 9ofilled with water by means of the connection at h -with'the boilerproper, C. Within the inner Walls of this boiler-extension G is arrangeda series ot' drop-tubes, I I, depending from a horizontal plate, K,located in the upper portion of said boiler-extension and form, ing apart of the same. These drop-tubes open at their upper ends through thehorizontal plate K, to which they are attached, and terminate at theirlower ends (which are closed) roo in the conibusiionchamber on a linewith the lines leading therefrom to the lire-box. These drop-tubes arealso lilled with Water, and the steam generated therein and the severalwatercompartments of theboilers asrends and passes into a steam-drum, L,located above the horizontalplate K in the upper portion of the boilerextension G. From this drum the steam is conveyed by any suitableconnections to the portionsof the building to be heated.

Directly beneath the horizontal plate K, and entirely around theboiler-extension G, is arranged a series of fines, k k, through whichthe smoke and heat ascending from the combustion-chamber pass oft' intothe smoke-jacket J, with which theseiiues communicate. These flues arearranged in the manner described for the purpose of allowing the smokeand heat to pass into the smoke-jacket at various points, and therebymaintain an even and uniform draft on all sides ot' the boiler andbetween all of the drop-tubes. These lues could be made to communicatewith the drop-tubes 1 l,

in which instance the said tubes would be made open at their lower endsand closed at' the top, and the heat, instead of passing up l betweenand around them, would pass direct1 ly through them, and the water wouldnecessarily be made to circulate around them by any proper constructionreadily suggested to those skilled in the construction ot' boilers.

In the modification shown in Fig. 3 a portion of the boiler proper, C,is located within the brick wall of the boiler-extension G, and theconnection between these two boilers is made by pipes M and N. 'lhepipes M connect with the water space or jacket F in the upper portion ofthe boiler C, and, extending' upward, open at their upper ends into thesteam-drum L. The pipesN connect with this same water space or jacket inthe lower portion of the boiler C, and, extending across the floor ot'the combustion-cliamber tothe opposite wall of the-boiler-extension G,pass up the inner side ofthe same, and connect also with the steam-drumL. When constructed in thisl higher degree of temperature than that inthe v pipes N, a good circulation is obtained. It

will also be manifest that the connection between the boiler proper andits extension might action of the heat.

of simple construction and arrangement and.

be made in various ways,'and that the details of their arrangement mightbe varied to some extent without departing from the gist of theinvention.

It will further be apparent frotn the foregoing description that theapparatus presents the greatest possible amount ot surface to the Thecomponent parts are properly protected from destruction by' heat. The adjustability of the fuel magazine or reser- Voir enables the same to beraised or lowered when occasion requires, and when so worn as tobeunlitfor use it can be readily removed and replaced by another withoutnecessitating the removal of other portions of the apparatus.

What we claim, and desire to secure by Letters Patent, is-

1. The combination,in a steam 'heating ap paratus,ofan annular boiler,avertically-adjustable fuel-magazine arranged within the same, a tire-boxsurrounded by a Water space or jacket, and horizontal lues leading fromsaid tire-box and communicating direct. with the rearcombustion-chamber, as set forth.

2. In a steam heatin g apparatus, the boiler C and fuel magazine orreservoir E, provided respectively with the set-screws d d. and slotsff, by means of which the said magazine or reservoir, when raised orlowered, can be secured in position, substantially as described, shown,and for the purpose set forth.

3. In a steam heating apparatus, the combination, with the annularboiler C, provided with the vertically-adjustable fuel-magazine E,tire-box D, and tlues t' fi, substantially as described and shown, ofthe boiler-extension G, mounted upon the walls of the combustionchamber,and having a water-space on its interior and a steam-drum at its upperend, substantially as described and shown.

4. In thesteam heatingapparatus described, and in combination, thecombustion-chamber H, boiler-extension G, drop-tubes I I, smoketlues lak, smoke-jacket J, and steam-drum L, all constructed and arrangedsubstantially as described. shown, and for the purpose set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.

WILLIAM HOPKINS. CHARLES FOUKLElt.

'Witnesses Mormon M. GABY, WILLIAM GRAHAM.

IOO

